A 34-year-old man received an electric shock (240 volts A.C.) in his right hand from a faulty domestic power drill, the current earthing through his left hand. Tetanic muscle spasm prevented him from releasing the drill for approximately 15 sec, causing severe pain in his neck and left shoulder. For several days he experienced muscle spasms throughout his left arm and neuralgic pain radiating d...

Multi-disciplinary research has revealed that electrically conductive contact of the human body with the surface of the Earth (grounding or earthing) produces intriguing effects on physiology and health. Such effects relate to inflammation, immune responses, wound healing, and prevention and treatment of chronic inflammatory and autoimmune diseases. The purpose of this report is two-fold: to 1)...

A high-speed earthing switch (HSES) of a gas-insulated switchgear (GIS) performs a secondary role in protecting the power system in the event of an accident. After being interrupted by a circuit breaker (CB), the short-circuit current remaining in the network should be earthed by the HSES. However, as the contacts of the HSES may have been damaged by a pre-arc during the closing operation, the ...

Abstract. Substation grounding design involves computing the equivalent resistance of the earthing system —for reasons of equipment protection—, as well as distribution of potentials on the earth surface —for reasons of human security— when fault conditions occur. While very crude approximations were available in the sixties, several methods have been proposed in the last three decades, most of...

OBJECTIVES Diurnal cortisol secretion levels were measured and circadian cortisol profiles were evaluated in a pilot study conducted to test the hypothesis that grounding the human body to earth during sleep will result in quantifiable changes in cortisol. It was also hypothesized that grounding the human body would result in changes in sleep, pain, and stress (anxiety, depression, irritability...

Purpose. To apply artificial intelligence (AI) technology for predicting the earthing resistor of underground mines with consideration climate change parameters. Methodology. In coal Vietnam, system are everywhere equipped individual rods combined centralized grounding bed; this significantly influences electrical safety and explosion safety. daily operation, must be measured tested regularly t...

Abstract Handgrip strength has often used as a tool to measure upper body conditions including neuromuscular performance, frailty, and cardiovascular health. Grounding been way of living in past presently have demonstrated by researchers speed wound healing, reduce inflammation, balance excessive free radical charge the body. is hypothesized work two ways-one discharging static field developed ...

Space Weather phenomena pose a major socio-economic threat due, in part, to the vulnerability of power network transformers geomagnetically induced currents (GIC). In 1985, Lehtinen and Pirjola (LP) provided method calculate GICs single-voltage-level network. The need account for lower voltages has caused proliferation GIC risk assessments applied grids with multiple voltages. We hereby present...